Automatic nailing device



Feb. 2a ,1926. 1,574,061

I JHALBRECHT AUTOMATIC, NAILING DEVICE I Filed Oct. 5', 1921 Patented Feb. 23, 1926,

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JOHN ALBRECHT, or KEWAUNEE, WISCONSIN.

AUTOMATIC NAILING DEVICE.

Application filed October 3, 1921.

T all whom it may concern:

ing Devices, of which the following is a description, reference being had to the accompanying drawings, which are a part or" this specification.

This invention relates to improvements in automatic nailing devices, particularly adapted for driving nails in boxes and the like. i

The invention contemplates a driving hammer associated with a power driven reciprocably mounted member; and one of the objccts of the invention is to provide a yieldable connection between the hammer and the reciprocating member so that in the event a nail sticks in the nail chute or strikes some impenetrable substance the connection between the hammer and the reciprocating member will yield, and thus avoid breaking the parts.

A further ObJect of the nivcntion is to provide novel means for positioning the nails one at a time under the driving hammer and for guiding them while they are being driven said means preferably being in the form of a yielding member provided with a. main passageway for the driving hammer and. a branch nail teed passageway leading into said main passageway, the lower portion of said member being split onthc axi of the main passageway into two parts and the two parts yieldably connected so that the lower portion of the main passageway may readily expandsutliciently to permit the nail heads to slip through, or, to permit the nail to bend or double over in case it should strike some impenetrable substance.

A furtl'ierobject of the invention is to provide novel. means for guiding the nails and yleldingly moving the guiding means that it will compensate for box parts of Serial No. 504,907.

of. the invention is to provide means yieldably mounted on said bracket for positioning the nails under the hammer and for guiding them while being driven whereby said means will readily accommodate itself to boxes varying; somewhat in depth and width and thickness of material and to overlapped portions when nailing a round box.

The invention consists in the novel constructions, arrangements and devices to be hereinafter described and claimed for carry- 111g out the above stated objects 2nd such other objects as will appear from the following description of a certain preferred embodiment illustrated in the accompanyingr drawings, wherein Fig. 1 is a front clevational. view oi an automatic nailing; device embodying the principles of the invention; and Fig. 2 a sectional view taken on line 22 of Fig. 1.

Like characters of reference designate like parts in both views.

Referring now to the drawings, it will be seen that the nailing device is mounted upon a vertically extending supporting member 5 which forms part of a power driven machine having a table not shown) on which the boxes to be nailed are placed.

A horizontally extending bracket member 6 is rigidly secured in any desired manner, in the present instance by a plurality of studs 7, to the supporting member lt nail positioning and guiding member 8 is yieldably mounted on the front side of the bracket 6, the member 8 preferably having a 'rearwardly extending a] )erturcd lug t? which normally projects through the upper portion of a slot- 10 formed in the trout side of the bracket. A vertically extending rod 11 carried by the bracket (3 extends through the aperture in said lug, the member 8 being normally held in its'uppermost position by means of an extension springs 12 coiled about the rod 11 and connected to a portion of the bracketand to the upper side of the lug 9. V

The member 8 is provided with a vertically extending maiu' passageway 13 and a branch nail feed passageway let which leads into the main passageway, substantially as shown in Fig. 2. That portion of the-member 8 below the intersection of the two passageways is split on the axis of the main passageway so as to provide the parts 8 and 8 The part 8 is provided with one or more apertures which are in alignment with internally threaded recesses provided in part 8"'s0 that threaded studs may be inserted through the apertures and into the recesses, a spring 16 being coiled about each of the studs and adapted to bear against the under side of the stud heads and the irontside ot' the part 8", thus providing meansfyieldably connecting the parts 8 and 8 so that the which will now be described.

"lower portion of the main passageway may I expand suiiicieiii-tlyto perm t the nail heads to slip therethrough. A nail chute 17 leads into the branch passageway 14;. V

The working end 18 ot the driving iammer 19 is adapted to reciprofate in the main passageway 13 and is approximately the tending yoke member 20 vie'ldably mounted on a cross head 21, the latter being reciprocally mounted on vertically extending guideways 22 on the supporting member The cross head is provided with a pair of forwardly extending apertured lugs 'The yoke member 90 is'provided with apertures which are in alignment with the apertures in the lugs 2-3. Rods e are inserted through the aligned apertures in said yoke member and lugs, as shown in Fig. 1, the upper nds (it said rods being connected to a driving means (not shown). The rods 24% are pro vided with collars adapted to be drawn up tightly against the under side of the respectivelugs 23 and held in such position by nuts 26. Relatively stiff springs 27 are coiled about the respective rods, being interpesed between the collars 25 and the yoke member 20. A Y 1th a nailing device constructed as described, it will be seen that during, normal I operation thereof the drivinghammer which is substantiallv ri idlv connected to the cross head will be moved downwardly to drive the nail and'to move the guide member the cross head 21 will continue on its downward excursion, downward movement of the driving hammer will be interrupted, so that there is no likelihood of any of the parts being broken. The lower portion oi the main passageway 13 for the nails and driving hammer eing expansible because of the yielding connection of the part 8 to the part 8 there is little likelihood of the nails becoming wedged in the passageway 13 in such a manner as to make it'diiiicult to extricate them even though they .do strike some impenetrable substance .and bend or double over in the passageway.

In practice a plurality of the nailing devices are preferablyarranged side by side so'that several nails may be driven at one time, but since all the devices are of the same construction, such an arrangement will be clearly apparent from the foregoing description.

I claim: 7

In an automatic nailing device the con;- bination of a reciprocating cross-head naring a pair of overhanging apertured lugs, a hammer, a transversely extending member secured to said hammer and provided with apertures in alignment with the apertures in said lugs, bolt-s extending through the respective aligned apertures, said bolts being fixed to said lugs respectively, a collar on each of said bolts, and a spring surrounding each bolt interposed between the collar thereon and said member, for the purpose specified.

In testimony whereof, I aiiix my signature. 

